Feeding or displacing belt



April 2 1, 1928. 1,667,126

A. J. KEISER I FEEDING OR DISPLACING BELT Filed March 21, 1925 INVENTOR. dlrtfiur d'kescl:

a ATTORNEYS.

Patented Apr. 24, 1928.

UNITED STATES PATENT OFFICE.

ARTHUR KEISER, OF ROCHESTER, NEW YORK, ASSIGNO B TO THE BIBGHEB 00., INC

' OF ROCHESTER, NEW YORK.

rannme on msrmcme mum,

Application filed March 21, 1985. Serial 110. 17,364.

The present invention relates to feeding or displacing belts and to a method of making 5 machines, envelope openers, and other machines which handle paper or sheet material, or articles made therefrom, and where it-is desired to shift the material or articles laterally during the movement of the belt. An ob ect of this invention is to improve that construction of belt which has a circular cross-section and has the portion thereof at itsinner'most periphery under compression while itsouter portion is under tension, so that the belt in addition to moving in an endless path also has a tendency to roll or turn about an endless axis extending through I .the center of the belt. Another object of the invention is to provide a belt of this t pawhich will have greater length of life ue to the fact that it has no transverse.

present invention may be employed;

'Fig. 2 is a perspective view of one of-the P members employed for making the t; F1 3'is a-fra entary pers ective view in w ich the belt i formed froiii two of the membersillustrated in Fi '2; and Fig. 4- is a plan viewo the belt after being completed.

In Patent No. 1,182,054, granted May 9,

' 1916, to Henry D. Taylor, there is described a belt of circular cross-section with its innermost periphery under compression and its.

outermost per1phery under tension, so that has atendency to turn about an-axis through the center of the belt, whereby material which is engagedby the belt is caused tobe shiftedlatera y at the s'ame'time itis movof the efiec-tive portion of the latter; In this Ta lor tent the belt was made from a strip 0 rub r or other material of circular cross section, having its ends cutat ri t chine'for opening envelopes for which the in a machine such as shown in the Taylor PatentNo. 1,182,054,-aforesaid,-being m untas the belt travels in an endless path it alsoing with. the'beltinthedirection of travel anglesand vulcanized together so that w en the belt is passed about its driving and guiding pulleys its inner periphery will be under compression while the outer periph-. ery will be under tension. In the use of a belt made in accordance with the method disclosed in the Taylor patent itwas found that thetwisting or turning during use together with-the tension on the belt tended to separate, after a time, the united ends.

According to this invent-iona belt is provided which has no transverse seams or joints. This result is secured, in this instance, by the making of two endless and 'seamless members 1 of substantially semicircular cross section, the innerperiphery 2 of said members being flat transversely except for a central circumferential groove 2 while the outer periphery 3 is semi-circular.

.riphery'5 will be under tension. The at faces of -two members are then cemented or otherwise united together with the result that a single endless member 6, Fig. 4, is rovided' of circular cross section, and havlng its innermost periphery under compression and its outermost per1phery under tension, thus facilitating the turning of the belt about an axis coincident with-the center of the endless belt. The belt may be employed a as .a feeding or shifting belt for imparting to envelopes, papers and paper articles, or other sheet material or artlcles, a lateral shifting movement during the movement of 13 articles with a portion of-the endless The invention is herein illustrated as used ed on two pulleys "24 and-25 beneath a ressure foot 32 to move envelopes to the cutter 5 along and laterally toward a guide 3. It is to be understood that the invention is not limited-tense in letter o'pen'ers.

The endless.belt 'has' no transverse seams or joints and, as a consequence, its life is materlally increased. It is preferably formed by a method which employstwo seamless and endless members, each-preferably having a semi-circular cross section with a flat SE10," substantially midwaybetween. the inner and outer periphery of the com tglleged belt, these two members being united ughtheirilat n.

i ripheries of'the completed belt.

sides by twisting each member so that its flat side intersects both the inner and outer pe- The central grooves form a central openin in the belt which tends to increase the resi iency of the belt.

What I'claim as my invention and desire to secure'by Letters Patent is:

L 1. An endless belt of the class described, circular in cross section, and having its innermost periphery under compression and its outermost periphery under tension in any position to which it may be turned about the center of said circular cross section, the belt being formed of a plurality of endless and seamless sections.

2. An endless belt of the class described formed from two endless members free from transverse seams or joints, and each having a semi-circular cross section, the flat sides of the two members being united and normally lying before being united,'in a position midway between the mner and the outer peripheries of the completed belt.

3. The method of making an endless belt ot the cla s described, which consists in provld'mg (v0 seamless and endless members each having a substantially semi-circular cross section with a flat side lying midway between the inner and the outer periphery of the completed belt, twisting said members 90 to cause the flat sides to intersect the inner and outer peripheries of thecompleted belt, and unitin the fiat sides while they are so positione to provide an endless belt,

seamless in the direction of its length, cir-' cular in cross sectio nd having its innermost periphery under eompression and its outermost periphery under tension.

4e An endless belt of the class described, formed from two endless and seamless members and having semi-circular cross-section with fiat si s of the members being united in one plane, and said belt having its innermost pegrooves in the flat sides thereof, the

riphery under compression and its outermost periphery under tension in any position to )which it may be turned about the center of its circular cross section.

' ARTHUR J. KEISER. 

